可以减少或防止焊接电弧磁偏吹的方法是（）。 ["采用挡风板","在管子焊接时，将管口堵住","改变焊条倾角","适当改变焊件上的接地线位置"]
（）组词词义同语素义不一致。 ["甜头；老化；歌手","勇敢；土改；讥剌","悠久；明亮；忧愁","人均；心灵；科技"]
Which two statements about Cisco Security Management Suite are correct?（） [" It should be implemented in a management VLAN."," Its connection to managed devices should be over a data VLAN."," It is made up of Cisco Security MARS and Clean Access software."," It should be deployed as close to the edge of the network as possible."," It delivers policy administration and enforcement for the Cisco Self-Defending Network."]
从语气和结构角度分析句子。我们明白为什么不能这样蛮干了
论述原岩条件对风化矿床形成的影响。
说明句中的词类活用现象
父曰：“履我！”良也为取履，因长跪履之。
